package com.greensock.easing
{

	public class Back
	{
		public static function easeIn(t:Number, b:Number, c:Number, d:Number, s:Number=1.70158):Number
		{
			return c * (t/=d) * t * ((s + 1) * t - s) + b;
		}

		public static function easeOut(t:Number, b:Number, c:Number, d:Number, s:Number=1.70158):Number
		{
			return c * ((t=t / d - 1) * t * ((s + 1) * t + s) + 1) + b;
		}

		public static function easeInOut(t:Number, b:Number, c:Number, d:Number, s:Number=1.70158):Number
		{
			if ((t/=d * 0.5) < 1)
				return c * 0.5 * (t * t * (((s*=(1.525)) + 1) * t - s)) + b;
			return c / 2 * ((t-=2) * t * (((s*=(1.525)) + 1) * t + s) + 2) + b;
		}
	}
}


